Industrial truck



May 21, 1929. E. H. REMDE INDUSTRIAL TRUCK Original Filed March l1, 19212 Sheets-Sheet May 21, 1929. E. H. REMDE INDUSTRIAL TRUCK Original FiledMarch ll, 1921 2 Sheets-Sheet 1 lnuculot Chfoznut Patented May ,21,1929.

. UNITED STATES,

PATENT OFFICE.

EDWARD H.' RENDE, OF CLEVELAND, OHIO, ASSIGNOR TO THE BAKER-BAUM@COMPANY, OF CLEVELAND, OHIO, A CORPORATION 0F OHIO.

INDUSTRIAL TRUCK.

riginal application led March 11, 1921, Serial No. 451,622. Divided andthis application filed February 3, 1923.

One object of the invention is to provider a truck having an improvedmechanism so constructed that goods and materials maybe readily scoopedup, transported and d1scharged.

bodying my invention.

v.Another 'object of the invention is to mount on the frame of a truckan improved scooping, elevating and dumping mechanisn'i of relativelysimple construction, whereby the same may be readily operated.

Other objects of the invention will be apparent to those skilled in theart to .wh1ch my invention relates from the following description takenin connection with the accompanying drawings. i

For the purpose of illustration, I have,

in the accompanying drawings, shown and` herein described one form ofapparatus em- Fig. 1 is a top plan view of a truck embodying myinvention. Fig. 2 is a side elevation of the truck.

Fig. 3 is an end elevation looking toward the right in Figs. 1 and 2.

Fig. 4 is a section on the line 4 4 of Fig. 3.

Fig. 5 isa section on the line 5-5 of Fi 3. 4

Ign the drawings, 1 indicates asan entirety the trukor motor vehicle,preferably of the electric motor driven type, and having a frame 1a andwheels 2, certain or all of which, if desired, may be driven by adriving mechanism 2 and steered. y3 indicates a housing within whichsuitable storage batteries 4 may be arranged. In Figs. 1 and 2 -I haveshown at one end of the truck a platform 5 on which the operative maystand, and control elements 6, 7 and 8 in convenient positions formanipulation in a well-A Serial No. 616,695.

2a. 9 indicates a platform secured sired manner to the frame 1n.

10 indicates as an entiret the raising and lowering mechanism rigi lymounted on the frame 1a and platform 9 of the truck 1. Of thismechanism, l2 indicates a frame preferably comprising a base 13 fixed tothe frame 1a and platform 9 and a pair of space guide members 14preferably extending vertically above and below the base 13. The guidemembers 14 preferably consist of channel bars, the flanges of whichserve as inany defront and rear guide walls for an elevating member 19to be later referred to. The base 13 preferably comprises a pair ofchannel bars 13a which may be connected together by cross members, onethereof being indicated at 15. The frame 12 is secured to the truck by apair of angle plates 16, which are bolted and riveted to the truck frame1 andY guide members 14, respectively, and by bolts 17 extending throughthe channel bars 13"Jl near their inner ends'to secure the latter to theplatform 9. The upper ends of the guides 14 may be braced by a pair oftierods 18 rigid y secured in any well-known manner to the inner ends ofthe bars 13a. The elevating) member 19 comprises a casting having a odyportion 19a provided with seats 20, 20a and pairs of upper and lowerarms 21. The body portion 19l is adapted to have connected to it ascoopin'g, lifting, carrying and dumping mechanism, indicated as anentiret at 22, which will be later described. 23 indicates devicescarried by the arms 21 and arranged to enga e the flanges of the guidemembers 14. Te devices 23 preferably comprise flanged rollers 231smounted on stud-shafts 23", the stems of which fit into openings formedin the arms 21. The arms 21 of each pair are preferably offset, relativeto the central longitudinal plane of the guide members, whereby theupper devices 23 will engage the front flanges of the guide members 14and the lower devices 23 will engage the rear iianges thereof. 24indicates a pair of spaced lugs between which extends a pin or shaft 25.26 indicates a frame swiveled on the pin or shaft 25 and supportingbetween its bifurcated members a pulley 27, the purpose of which will belater set forth.

28 indicates as an entirety mechanism for ico operating the elevatingmember 19. Of this mechanism, 29 indicates a frame preferably in theform of a casing. The opposite end walls of the casing are provided withopenings to receive and support the opposite ends of a shaft 30 carryinga drum 31. indicates an electric i motor preferably mounted on a bracketor other extension member of the frame 29. The shaft of the motor 32 isconnected through suitable gea-ring (not shown) with the drum shaft,whereby the, latter may be driven 1n either direction at will. 33indicates a suitable controller, for operating the motor 32. Thecontroller is placed within convenient reach of the operative, see Fig.2. 34 indicates a plurality of devices serving to rigidly clamp thecasing 29 to the bars 13, at all times. 36 indicates the hoisting rope,which is adapted to be wound on and unwound from the drum 31. The ropeis connected to the drum in any suitable manner. the rope 36 extendsupwardly around a sheave 37 loosely mounted on a shaft 38 supported bythe upper ends of the guide members 14. The rope then extends downwardlyaround the pulley 27 and then upwardly and over a second sheave 37a onthe shaft 38, its opposite end being anchored in any desired mannelyforexample by a clamp 39.

40 indicates a casing having pairs of suitable contact devices (onedevice of each pair being movable), through which electric current isestablished to operate the motor 32 when the lifting member is raisedand lowered. 40" indicates an arm pivoted to the casing 40 and arrangedto engage and operate the movable device of either pair of contactdevices to break hthe electric circuit when the arm is swung in onedirection or the other. At its outer end the arm 4()b is bifurcated andstraddles a pin or projection 41a carried by a movable member 41. Themember-41 preferably comprises a bar and carries a pair of spacedtappets 41", 41b which projects into the path of movement of theelevating member 19 or some element carried thereby. The` bar 41 isslidably mounted by suitable guide devices 41 (one being shown iniFig.3) whereby it can move endwise in either direction. The. normal positionof the bar 41 is shown in Fig. 3, being held against movement downwardlyby a coiled spring 41 interposed between the guide device 41 and acollar or washer 41d adjustably mounted on the upper end of the rod by anut 41e. Upon engagement of the member 19 with one of the tappets 41h,the bar 41 is moved endwise and it in turn, through the pin 41a, swingsthe arm 40", causing the latter to break the circuit. v This operationshuts off the motor and arrests theelevating member 19 against furthermovement. If the bar 41 has been moved upwardly, it will move downwardlyby From it,

gravity when the elevating member 19 is operated downwardly, until thespring 41 engages the guide device 41; if the bar 41 has been moveddownwardly, such movement will compress the spring 41 which will returnthe bar to normal position when the elevating member 19 moves upwardly.j

The scooping, lifting, carrying and dumping mechanism` 22 isparticularly adapted for engaging, ltransporting and discharglnggranular materials which can he arranged in a pile and scooped uptherefrom. Of the scooping, lifting, carrying and dumping mechanism,indicates a supporting means preferably comprising a U- shaped member 54having its base portion removably secured ina rigid manner to theelevating member 19. At their free ends,

the arms 55 Aof the U-member are formed with aligned openings 5G toreceive trunnions 57 of a scoop 58. As shown in the drawings, thetrunnions for the scoop 58 are arranged slightly forward of the centerof gravity, so that the rear end of the scoop will tend to drop. 59indicates a lug or stop device provided on one side of the scoop andarranged to engage the upper` side of the adjacent arm 55, whereby thescoop will be support-ed in a predetermined suitable position to holdthe material while it is being transported. By preference, the scoop isso shaped, thatwhen the lug 59 engages the arm 55, the bottom of thescoop will be inclined upwardly toward the discharging end. 60 indicatesa lug preferably carried at the lower rear end of the scoop 58 andextending rearwardly therefrom. 61 indicates an arm extending forwardlyfrom some rigid part of the frame, preferably the lower end of one ofthe guide members 14. The arm 61 is arranged in the path of movement ofthe lug 60 as the scoop moves downwardly. The arm 61 is arrangedrelatively near the floor, as shown in Fig. 2, so that it is engaged bythe lug GO near or just prior to the limit of movement downwardly of theelevating element 19. As a result of this arrangement, when theelevating member moves downwardly, the lug 6() will engage the arm 61,thereby causing the scoop to tilt on its trunnions so that its free orscooping end will engage the floor. When in this position, the truck canbe driven forwardly and thereby cause the scoop 58 to scoop up thematerial to be transported. Thereafter, if the raising and lou-'eringmechanism is operated, the scoop will bc raised. Due to the fact thatthe center of gravity of the scoop and the material therein is rearwardof the trunnions, the scoop 58, when raised or elevated, will assume itsnormal position with the lug or stop 59 engaging the adjacent arm 55.

62 indicates a mechanism for automatically dumping the scoop. Of thismechanism, 63 indicates a transverse rod supported at the rear end ofthe scoop 58 by a pair of brackets 64. 65 indicates a tripplng leverpreferably ivoted intermediate its ends on the cross s aft 38. One armof the lever extends downwardly and at its lower end is provided with aninclined face 66 and a hook portion 67 The other end of the lever 65 isprovided with a weight 68, which tends to swing the downwardly extendingarm outwardly to maintain the inclined surface 66 in the path ofmovement of the rod 63. 69 indicates a lilik pivotally connected at oneend upon the frame 12 and having a pivot pin and slot connection at itsother end with the lever 65. The slot is of a predetermined length sothat its end walls will serve as stops to limit the movement of thelever 65 in either direction.

lVhen the scoop 58 is elevated with its load, the rod 63 will ride theinclined surface 66 and cause the lever to swing rearwardly (see dottedlines in Fig. 2), so that the rod 63 can pass around and be arrangedabove the hook portion 67, whereupon the lever will swing back to itsnormal position under the influence of the weight G8. If now the raisingand lowering mechanism is operated to lower the scoop 58, the arm 63will engage the hook portion 67 and be arrested thereby. Such engagementwill cause the scoop to rotate on its trunnions (see dotted lines inFig. 2), thus automatically discharging or dumping the. material. As thelowering operation is continued, it will be seen that the rod 63 willeventually disengage the hook portion 67 and then permit the scoop 58 toright itself. If the lowering operation is continued the lug 6() willultimately engage the arm 61 and be tilted for scooping purposes, asalready described.

i From the foregoing description it will be seen that the combinedraising and lowering scooping and automatic dumping mechanism shown inthe drawings may be used advantageously for loading, elevating, thentransporting, and finally dumping various kinds of materials in a rapidand economical manncr. It will be understood that the raising andlowering mechanism is so controlled that the tilting of the scoop forscooping up of material is effected just prior to its engagement withthe material; that after the material is scooped upthe scoop 58 iselevated, preferably to the position shown in dotted lines in Fig. 2,and there held while the truck is being driven to the place of dumping,thereupon the elevating member 19 is lowered sutiiciently to cause thedumping of the scoop. As the truck driving mechanism and the raising andlowering mechanism may be rapidly operated, it will be obvious that thetruck may be operated with facility and rapidly to scoop up, transportand dump l materials.

To those skilled in the art of making mechanism of the class described,many alterations in construction and widely ditfering embodiments andapplications of my invention will suggest themselves, without departingfrom the spirit and scope thereof. My disclosures and the descriptionherein are purely illustrative and are not intended to be in any senselimiting.

In the construction herein disclosed I provide a plurality of means fortilting the scoop at predetermined positions as it moves in onedirection. These means are' arranged so that the scoop is tilted as itmoves downwardly. This construction permits the scoop to be loaded andelevated to a position above the tilting means and then transported tothe place of discharge; and then by operating the raising and loweringmechanism to lower the elevating member, the scoop will tirst discharge.its load and then be positioned ready to scoop up another load withoutany further operations on the part of the operative.

This application is a division of my original application filed March11, 1921, Serial No. 451,622.

What I claim is:

1. In apparatus of the class described, the combination with aself-propelled truck having a frame, of a guide frame on said truckframe, an element guided upwardly and downwardly by said guide frame,means for moving said element upwardly and downwardly, a lifting membertrunnioned on said element, and inter-engaging elements carried by oneof said frames and said lifting member and arranged to automaticallycolact at a predetermined position in the movement of said guidedelement in one direction to swing said lifting member about itstrunnions.

2. In apparatus of the class described, the combination with aself-propelled truck having a frame, of a guide frame on said truckframe, an element guided upwardly and downwardly by said guide frame,means for moving said element upwardly and downwardly, a lifting membertrunnioned on said element, a pair of devices carried by one of saidframes, one of said devices being disposed intermediate the travel ofsaid guided element along said guide frame, and means on said liftingmember arranged to engage said devices successfully as said elementmoves in one direction.

3. In apparatus of the class described, the combination with aself-propelled truck having a frame, of a guide frame on said truckframe, an element slidably engaging said guide frame, means for movingsaid element upwardly and downwardly, a lifting member trunnioned onsaid element, and means carried by said lifting member and one of saidframes for tilting said member at a predetermined position intermediatethe travel of said element along said guide' frame, said mea-ns beingconstructed and arranged to permitV movement of said lifting memberupwardly beyond the operating portion of the tilting element carried byone of said lframes but to engage and tilt said member when it movesdownwardly.

. 4. In apparatus of the class described, the combination with aself-propelled truck having a frame, of a guide frame on said truckframe, an element guided upwardly and downwardly by said guide frame,means for moving said element upwardly and downwardly, a liftingmembervtrurnioncd on said clement, and means carried by said liftingmember and one 'of said frames for tilting said. member atapredetermined position, said means comprising a lever provided with ahook and an incline and a device on said lifting member arranged toengage the incline toswing the lever on its fulcrum and permitsaiddevice to move to a point above the `hook, whereby said device mayengage said hook to trip said lifting member'when the latter is lowered.l y

5. In apparatus of the class described, the combination with aself-propelled truck having a frame, of a guide frame on said truckframe, an element guidedl upwardly and downwardly by saidguide frame,means for movingsaid element upwardly and downwardly, a lifting membertrunnioned on said element, means carried by said lifting member and oneof said-frames for tilting said .member at a; predetermined position,said means comprisrng a lever provided with a hook and an mclme and adeviceon the lifting member arranged to engage the ineline to swingthe'lever on its fulcrum and permit said device to lmove to a pointabove i 4the hook, whereby said device may engage said hook to trip saidlifting member when the latter moves downwardly, and means for againtilting said member during its movement downwardly.

6. In apparatus of the class described, the

' combination of a frame having sup orting "wheels, a guide frame, asupport sli able in said guide frame, a lifting member trunnioned onsaid support, engaging means extcnding'laterally from said liftingmember, and a plurality of devices disposed inthe path of movement ofsaid engaging means as said member moves in one direction and eacharranged through lts engagement with said` engaging means to tilt saidmember on its trunnions, one of said devices being between the limits ofmovement of said slidable support. n'

7. In apparatus of the class described, the combination of a framehaving supporting wheels, a guide frame, a support movable in said guideframe and provided with a pair of spaced arms, a scoop trunnioned onsaid arms at a point laterally of its lcenter of gravity and having astop engaging said support to limit its movement in one directionwhereby said sooo is maintained in a substantially horizonta position,means for raising and lowering said support, and means comprising aplurality of elements in vertical arrangement along the travel of saidscoop and an element on Vsaid scoop succcssively inter-engageable withsaid elements to tilt said scoop at aplurality of positions as saidsupport moves in one direction.

8. In apparatus of the class described, the combination of a framehaving supporting wheels, a guide frame, a sup ort movable in said guideframe and provi ed with a pair of spaced arms, a scoop trunnioned onsaid arms at-a point laterally of its center of gravity and having aYstop engaging said support to limit its movement in one directionwherebysaid scoop is maintained in a substantially horizontal position,means for raising and lowering said support, and means comprising aplurality of elements in vertical arrangement along the travel of saidscoop and an element on said scoop successively inter-engageable withsaid elements to tilt said scoop ata plurality of positions as saidsupport moves downwardly.

9. In apparatus ofthe class described, the combinatlon of a frame havingsupporting Wheels, a guide frame, a support slidable upwardly anddownwardly in said guide frame and provided with a pair of spaced arms,a scoop trunnioned on said arms on a transverse axis disposed laterallyof its center of gravity and having a stop engaging said support tolimit its movement in one direction whereby said scoop Vis maintained ina substantially horizontal position, means for raising and lowering saidsupport, and a device intermediate the ends of movement of said supportarranged to engage said scoop and tilt it as said support moves in onedirection.

. 10. Inv apparatus of the class described, the combination with aself-propelled truck having a frame, of a guide frame Von said, trucliframe, an element guided upwardly.

and downwardly by said guide frame, means for moving said elementupwardly and downwardly, a lifting and dumping member trun' elementmoves in one direction, and a separate device for tilting said liftingand dumping member as it moves in one direction.

11. In apparatus of the class described, the combination of a frame,wheels for supporting said frame, a guide frame on said truck frame, anelement guided upwardly and downwardly by said guide frame, means formoving said element upwardly and permit said device to move to a pointabove the hook, whereby said element may engage 1 said hook to trip saidlifting member when the latter is lowered.

In witness whereof, I have hereunto subscribed my name.

EDWARD H. REMDE.

